The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 2020
Filed:
Aug. 22, 2018
Instituto Mexicano Del Petroleo, Mexico City, MX;
Cesar Andres Flores Sandoval, Mexico City, MX;
Marco Antonio Chavez Mora, Mexico City, MX;
Edgar Benedicto Zamora Guerrero, Mexico City, MX;
Alfonso Lopez Ortega, Mexico City, MX;
Gerardo Zavala Olivares, Mexico City, MX;
Fernando Alvarez Ramirez, Mexico City, MX;
Flavio Salvador Vazquez Moreno, Mexico City, MX;
Instituto Mexicano del Petroleo, Mexico City, MX;
Abstract
A problem of the crude oil industry is the presence of large amounts of water and salts, which can not be efficiently removed by conventional dehydrating polymers. In addition, the acid stimulation operations of petroleum wells cause the chemical degradation of demulsifiers such as polyethers and phenolic resins, reducing drastically their efficiency as water and salt removers. Disclosed herein is a series of new copolymers that are combinations of an alkyl acrylate and a carboxyalkyl acrylate, synthesized by semi-continuous emulsion polymerization (under starved feed conditions), which ensures both the homogeneity of the different chains as well as the randomness of the monomers distribution. The acrylic-carboxyacrylic copolymers show good performance as water/oil emulsion breaker initiators, water droplet coalescers and clarifiers of the remaining aqueous phase. These novel acrylic-carboxyacrylic copolymers show a higher clarification capacity in comparison with acrylic copolymers [19], vinyl acrylics [12] and polyethers.